Paper-winding machine.



N0. 656,l'49. Patented Aug. l4, I900.

W. P. WOOD. PAPER WINDING MACHINE.

(Application filed Mar. 14 1900.)

(No Model.)

QIJ

, 1'0 all whont it may concern:

\VILLIAM I. WOOD, OF HOLYOKE, MASSACHUSETTS, ASSIGNQR TO FRED- ERICK S. NEWMAN, OF SPRINGFIELD, MASSACHUSETTS.

PAPER-WINDING MACHINE.

. SPECIFICATION forming part Of Letters Patent No. 656,149, dated August 14, 1900.

Application filed March 14, 1900. Serial No. 8,652. (No model.) I

Be it known that I, WILLIAM P. WOOD, a citizen of the United States of America, residing at Holyoke, in the county of I-Iampden and State of Massachusetts, have invented new and useful Improvements in Paper- Winding Machines, of which the following is a specification.

This invention relates to paper-winding machines,and particularly to machines of this class employed for rewinding rolls of paper before the latter are subjected to certain processes in which it is essential that the roll shall be wound in a true cylindrical form and under substantially-even tension.

The object of the invention is to produce a machine of this class adapted to wind a roll of paper in true cylindrical form and under an even tension; and the invention consists in the construction of the machine, as fully described in the following specification and clearly pointed out in the claims.

The drawings consist of two figures, of which I Figure 1 is a side elevation of a windingmachine embodying this inventiomand Fig. 2 represents in front elevation a part of a rewound roll and one of the supporting-rolls therefor.

Referring to the drawings, 1 is the frame of the machine, adapted to receive on one end thereof, in a proper bearing, theroll 2, of paper which is to be rewound. The paper of this roll is wound on the usual wooden core 3, having a shaft 4 through its center. In proximity to this roll is a pair of feed-rolls comprising the roll 5, rotatable in fixed bearings in the frame, and a second roll6 above the roll 5, supported parallel with the latter in vertical slots 7 in an arm of the frame, as shown. The said roll 6 rests on the paper as the latter passes around the roll 5 and by its weight prevents the slip of the paper around the roll 5. On one end of said roll 5 is a drivingpulley, whereby the requisite movements are imparted thereto. On the other end of the shaft 8, on which the roll 5 is supported, is a sprocket-wheel 9, and a drive-chain 10 from the latter runs over another sprocket-wheel11, near the other end of the machine, which is fixed on the shaft 12 of the second feed-roll13,

v l which the rewound roll 14 is rotated.

This last-named roll is adapted to bear about equally on said feed-roll l3 and on the roll15, and, like the roll 2, the paper of this roll is wound on a wooden cylinder having a central shaft, which is indicated by 16 and engages inverted-U-shaped bearings 17, which have a sliding movement in the uprights 18, to the end that as the roll 14 grows in diameter said hearings will move upward. This construction of bearing is common in machines of this description.

The circumferential speed of the feed-roll 5, which draws the paper off from the roll 2, must be identical with that of the roll 13, which determines the speed of rotation of the roll of paper 14, to the end that there may be no variation in the tension under which the paper is wound on the roll 14.

In the drawings the two rolls 13 and 5 are shown as having the same diameter, and in this case the diameters of the two sprockets 9 and ll'would be the same. If, however, it is found desirable to vary the diameters of the said feed-rolls 5 and 13, then the diameters of the sprocket-wheels must be varied accordingly to provide for obtaining the same circumferential speed of said feed rolls. From the rolL 2 the paper as drawn off is passed around under the roll 5, up between the latter and the roll 6, which rests upon it, and from thence up over the curved rack 19. Between the feed-roll 5 and the top of the rack the paper is allowed to hang slack. At the bottom of said rack are located the tension-rolls 20, around which the paper is passed from one side of one to the opposite side of the other, as shown, and from thence, if the edges of the paper are to be trimmed or the web divided into strips, it passes upward over the guide-roll 21 and under the slitters 22,

and from thence down under a guide-roll 23 and over the top of the feed-roll 13, on which rests the rewound roll 14:. There may be as many tension-rolls 20 as are necessary to subject the paper to the proper tension before it is rewound. By means of this construction it is seen that the paper is unwound from the roll 2 by the feed-roll 5 as fast as it is taken up by the roll lat and that between the feedroll 5 and the tension-rolls 20 the paper is allowed to hang slack. Hence the tension under which the roll will be rewound will be governed solely by the tension-rolls 20.

The course of the paper through the machine is indicated by successively-armnged arrows.

Ileretofore in addition to the tension of the rolls 20 or some similar device the paper has been subjected to the further tension put upon it by the act of unwinding the roll 2, there having been no feed-roll interposed between the said roll 2 and the tension-rolls, and it is obvious that this additional tension varied constantly as the diameter of the roll varied.

If the paper is not to be trimmed or di vided into a' number of longitudinal strips, then instead of running from the lower tension-roll up over the roll 21 it would run directly from the said lower tension-roll to the roll 23 and from thence follow the same course as indicated by said arrows.

It has been found in practice that in order to wind the roll 14 perfectly true and prevent the occasional wrinkling of the paper it is necessary to give that roll a slight oscillation in a vertical plane during the winding process, which is effected by means of devices adapted to lift each end of the roll alternately off from the feed-roll, whereby the paper is prevented from creeping between said roll 13 and the roll 14, and to this end said roll 14 is supported about equally on said rolls 13 and 15 and the latter having its shaft 24 slightly inclined to the true axis of the roll, whereby the ends of said roll will rotate eccentrically to the roll 13, and at each half-revolution of the roll 15 each end of the roll 14 will be lifted slightly off from the roll 13 and allow the tension to straighten out the paper on each end of the roll if it has worked forward at all between the rolls or it any inequality in the two edges exists due to a greater absorption of moisture on one side of the paper than the other.

Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-

1. In a paper-winding machine, a suitable frame, a feed-roll on one part thereof adapted to draw paper from a roll, a second feed-roll on another part of the frame adapted to effect the rewinding of said paper on another roll, means for applying a tension to the paper between said feed-rolls, and for imparting to the latter the same circumferential speed, substantially as described.

2. In a paper-winding machine, a suitable frame, a roll from which paper is drawn, a feed-roll for drawing said paper from said roll, another feed-roll adapted to effect the rewinding of said paper on a second roll, means for alternately lifting each end of said second roll away from its feed-roll during its rotation, and suitable tension devices for the paper between the two feed-rolls, and a positive driving connection between the two feedrolls adapted to impart to each of them the same circumferential speed, substantially as described.

3. In a paper-winding machine, a suitable frame, a feed-roll on one part thereof adapted to draw paper from a roll, a second feed-roll on another part of the frame adapted to elfect the rewinding of said paper on another roll, a guide-rack, and tension-rolls between said feed-rolls, a positive driving connection between said feed-rolls, whereby both of the latter have imparted to them the same circumferential speed, and means for rotating one of said rolls, substantially as described.

at. In a paper-winding machine, the combination of the feed-roll 5 and the feed-roll 13, a positive driving connection between said rolls consisting of sprocket-wheels on the rolls and a chain extending over said wheels, whereby both of said rolls have imparted to them the same circumferential speed, a guiderack 19, tension-rolls 20, and slitter-rolls 22, located between said feed-rolls and an eccentrically-supported cylind rical roll 15,substantially as described.

5. In a paper-winding machine, the combination of a paper-receiving roll as 14, with two supporting-rolls therefor, one of which is a feed-roll and is adapted to rotate the paperreceiving roll, the latter and said feed-roll having parallel axes of rotation; said second supporting-roll having an axis inclined to the axis of said paper-receiving roll, whereby each end of the latter will be alternately raised and lowered by the rotation of said second supporting-roll, substantially as described.

WM. P. WOOD. Witnesses:

WM. 11. CHAPIN, K. I. CLEMONS. 

